Rotary valve for internal-combustion engines.



O. L. GOOKSON.

ROTARY VALVE r03 INTERNAL oomnusnon menus.

' ABPLIOATIOI FILED AUG. 21, 1911.

1,061,599. Patented May 13,1913.

/1 01? 82.5 if? a5. away/z CHARLES L. OOOKSON, OF KANSAS CITY, MISSOURI.

ROTARY VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented May 13,1913.

Application flied August 21, 1911. Serial No. 645,067.

To all whom it may concern:

Be it known that I, Cnanuzs L. COOKSON, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Rotary Valves for Intermil-Combustion Engines, of which the following is a specification.

This invention relates to rotar valves for internal combustion engines, an has for its object the production of an etlicient and reliable valve of this character whereby provision is made for the com lete evacuation of the burned gases from t e cylinder and thorough and complete separation or isolation of the inlet and exhaust ports to effectually guard against the possibility of backtiring or the contamination of the supply of gas for the cylinder.

A further object is to produce a rotary valve composed of two so arable members of such arrangement that tie exhaust member may be readily removed to facilitate the removal of carbon therefrom.

Another object of the invention is to produce a rotary valve composed of two separable members so arranged that the exhaust member may be made of much larger diametcr than the inlet member to permit the exhaust )ort to have suflicient area to give more reedom for and therefore a uicker exhaust action than is possible where t e two members are of integral formation.

With these general objects in view the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed ulnl in order that it may be fully understood reference is to be had to the accompanying drawing, in which- Figure 1, is a vertical section of a part of an internal combustion engine equipped with a rotary valve embodying1 my invention. Fig. 2, is a section on the otted line II of Fig. 1. Fl 3, is a detail perspective view of the inter ocking end portions of the two members of the valve.

Referring now to the drawing, 1 indicates part of a cylinder of an en inc, and 2 the valve casing thereof, provi ed with vertically-alined inlet and exhaust orts 3 and 4, res ectively, and a bushing or lining 5, prefera ly of cylindrical form, as shown. The bore 6 of the lower part of the lining is of smaller diameter than the bore 7 of the upper part, and an upwardly-disposed horizontal annular shoulder 8 is formed at the junction of the bores. The bushing or linmg is provided with a port 9, communicating with the inlet port 3, of the cylinder, and with a port 10, communicating with the exhaust port of the cylinder.

The valve consists of two cylindrical members 11 journuled in bore 6, and 12 journaled in bore 7, of the bushing, the former having a cross rib 13 projecting from its upper end into a recess or groove 14, in the bottom of member 12, this arrangement compelling both to turn together, it being preferred that member 12, shall rest on the shoulder 8, as a precaution a ainst fresh gas escaping by way of the ex must port or the occurrence of cross-firin from one ort to the other it bein manifest that eit ier eventuality is impossi le because of the tortuous course which the gas or flame would have to follow.

The member 11, hereinafter termed the in let member of the valve, is provided at its lower end with a stem 15, for connection in any suitable manner with means (not shown) for rotating it, and below the bushing or lining with one or more 0 )cnings 16, the member from a point just a ove said opening or openings 16, being journalcd in a casting 18, having a gas-supply assage 19 leading to a chamber 20, surrouncing the valve member and communicating with the said opening or openings 10.

In the horizontal plane of ports 3 and 9, the inlet member is rovided with a port 21, adapted once in eaci revolution to register with said ports 3 and 0, and between said port 21 and casting 18, a packing ring 22, forms a gas-tight joint between said member and the bushing or linin the ring preferably occupying a circum erential roove 23, in the member. The exhaust meniber in the horizontal plane of ports 4 and 10, is pro vided with a port 24, for registration once in each revolution with said ports 4 and 10, and above said port 24, a gas-tight joint is established by the interposition of a )acking ring 25, between the said member and the bushing or lining, the ring preferably fitting in a circumfcrential groove 26 in the member. The upper end of the exhaust member opens into an exhaust pipe or manifold 27 secured upon the casing.

The ports 21 and 24 are so proportioned ill and arranged thatwhere the crank-shaft (not shown) make two revolutions to one of the valveone-e1ghth of the circumference of the valve intervenes between the rear wall of port 24 and the front wall of port 21, in order that the suction stroke of the piston (not shown) immediatel following the exhaust stroke, shall effect the charging of the cylinder with fresh as, the compression and ignition strokes ollowing the order named, as usual, before the exhaust port again registers with the ports 4 and 10.

Owing to the sectional construction of the valve it is possible to employ an exhaust member of ample size to insure the full and complete scavenging of the cylinder and to provide a path through the bushing or lining so tortuous and of such length that danger of cross-firing is entirely eliminated, as hereinbefore stated. Such construction also provides for the easy and quick removal of the exhaust member for the removal of carbon therefrom, it being unnecessary to frequently remove the inlet member as the gasolene mixture passing through it is dampened and washes oil the carbon, such mixture also acting as a lubricant for said member.

In the event the valve is em loyed to supply a plurality of cylinders, t e supply of gas for all of them will be through passage 19 and openings 16 to the inlet member and thence in succession to the various cylinders, the dead gases passing off from the cylinders throu h the upper member of the valve and the pipe or manifold 27.

From the above description it will be seen that I have produced a rotary valve for internal combustion engines embodying the features of advantage enumerated as ob'eciives and which is susceptible of modi cation within the scope of the appended claims.

I claim:

1. A rotary valve, comprisin a casing having an inlet port and an ex aust port, a bus ing fitting in and terminating short of the upper end of the casing and of increased internal diameter in a lane above the inlet port, and provided with an inlet port and an exhaust port registering respectively with the corresponding ports of tie casing, an exhaust pipe secured upon and depending into the casing and engaging the upper end of the bushing, and a valve journaled in the bushing, consisting of superposed inlet and exhaust members detachably interlocked together at their adjacent ends, with the exhaust port member resting at its lower end upon the bushing at the upper end of the portion thereof of smallest internal diameter, the inlet port member being hollow and having a port to register at regular intervals with the inlet port of the bushing, and the exhaust port member being of cup-form and communicating at its upper end with said pipe and having a port to register at regular intervals with the exhaust port oi. the bushing.

2. A rotary valve, comprising a casing having an inlet port and an exhaust port. a bushing fitting in and terminating short of the upper end of the casing and of increased internal diameter in a plane above the inlet port, and provided with an inlet port and an exhaust port registering respectively with the corresponding ports of tie casing, an exhaust pipe secured upon and depending into the casing and engag ing the upper end of the bushing, a valve journaled in the bushing, consisting oi superposed inlet and exhaust members detachably interlocked together at their adjacent ends, with the exhaust port member resting at its lower end upon the bushing at the upper end of the portion thereof oi. smallest internal diameter, the inlet portmember being hollow and having a port to register at regular intervals with the inlet port of the bushing, and the exhaust port member being of cup-form and communicating at its upper end with said pipe and having a port to register at regular 1nter- 1 vals with the exhaust port of the bushing, a packing ring fitting around the inlet port member of the valve below the plane of the inlet ort of the bushing, and a packing ring ber of the valve above the exhaust port of the bushing.

In testimony whereof I 'al'lix my signature, in the presence of two witnesses.

CHARLES L. COOKSON.

Witnesses:

HELEN C. Rooesas, G. Y. Tnoarn.

Copies of thin patent may be obtained for ave cents each, by addressing the "Commissioner of Patents. Washington, D. 0."

tting around the exhaust port lllClll- 

